investigation into broadwell and petraeus, show no evidence of any sexual relations. but are friendly and, perhaps, a bit flirtatious. in one note, kelly telling allen, she saw him on tv. he responds, thanks, dear. you're a sweetheart. meanwhile, david petraeus' sudden departure as cia director, has created lots of questions on capitol hill. especially that looming issue, the attack in benghazi, on a cia facility there. some senators still want to question petraeus about what went wrong. >> i know that we're interested in hearing from him. probably in front of the intelligence committee, which i also sit on. >> reporter: it is possible that petraeus could eventually testify, george. but that will definitely not happen this week. >> congress ramping up the questions, even as the fbi continues to investigate possible crimes. and abc senior justice correspondent, pierre thomas, has exclusive details on that. good morning, pierre.